My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA8.2AHM3/H
- Part No.:
- P4SMA8.2AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA8.2AHM3/H.pdf
- Description:
- TVS DIODE 7.02VWM 12.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,807
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA8.2AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping transient overvoltages on power and signal lines. It features a 7.79 V to 8.61 V breakdown voltage (VBR) at 10 mA, 7.02 V maximum stand-off voltage (VWM), 12.1 V clamping voltage (VC) at 33.1 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used for protecting MOSFETs, ICs, and sensor interfaces in automotive and industrial systems.
For engineers reviewing the P4SMA8.2AHM3/H datasheet, P4SMA8.2AHM3/H pinout, P4SMA8.2AHM3/H application, or P4SMA8.2AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant construction (HM3 suffix), low incremental surge resistance, fast response time, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
The P4SMA8.2AHM3/H operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable avalanche behavior under repetitive transients. Its thermal resistance is 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead), enabling reliable operation up to 150 °C junction temperature.
It delivers 400 W peak pulse power per 10/1000 µs waveform at TA = 25 °C, derated linearly above 25 °C per Figure 2, and supports 40 A non-repetitive forward surge current (8.3 ms half-sine). The device meets MSL Level 1 per J-STD-020 with 260 °C reflow peak temperature tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.79 V / 8.61 V at 10 mA - defines precise avalanche initiation threshold for predictable clamping onset |
| VWM | 7.02 V - maximum continuous reverse operating voltage before leakage exceeds 200 µA |
| VC at IPPM | 12.1 V at 33.1 A - clamped voltage during 400 W transient, limiting stress on downstream components |
| PPPM | 400 W (10/1000 µs) - peak transient energy absorption capability under standard surge test condition |
| IFSM | 40 A (8.3 ms half-sine) - surge current handling for inductive turn-off events without failure |
| TJ max | 150 °C - maximum allowable junction temperature ensuring long-term reliability in high-ambient environments |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.0 mm × 5.0 mm thermal pad footprint |
Pinout & Package
SMA (DO-214AC) package with matte tin-plated leads, compliant with J-STD-002 and JESD 22-B102 solderability standards. Cathode identified by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient clamp output node | Connected to protected line; conducts during overvoltage to shunt current to ground |
| Anode (unmarked end) | Reference/return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Halogen-free & RoHS-compliant (HM3) | Meets environmental compliance requirements for modern automotive and industrial PCB assemblies |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage across temperature and lifetime |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning or baking |
| Low profile SMA package | Enables high-density layout and compatibility with automated pick-and-place equipment |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp transients before they reach voltage regulators and microcontrollers. Use Value: Limits clamped voltage to 12.1 V during 33.1 A surges, preventing damage to 16 V-rated downstream ICs while maintaining AEC-Q101 compliance. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Standoff protection on 4–20 mA loop lines exposed to ESD and inductive switching noise. Use Value: With 7.02 V VWM, it remains non-conductive during normal 24 V loop operation yet responds within picoseconds to >1 kV ESD events. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
Use Scenario: Secondary-side surge suppression in AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Clamping transient spikes induced by nearby relay switching or lightning-induced coupling on low-voltage DC outputs. Use Value: 400 W peak power rating handles repetitive 10/1000 µs surges without degradation, supporting UL 497B recognition. |
Use Scenario: Overvoltage protection on -48 V DC telecom power distribution boards. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; this unidirectional part used with series blocking diode for negative-rail protection. Use Value: Low 0.065 %/°C VBR tempco ensures stable clamping across -40 °C to +85 °C telecom operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A | Higher VWM (6.89 V), lower VC (12.0 V), same 400 W rating but SMB package (larger footprint) | Requires PCB layout change due to DO-214AA vs. DO-214AC; better thermal dissipation but less space-efficient | Select when higher thermal margin is needed and board area permits larger package |
| 1.5SMC8.2A | Same VBR/VWM/VC specs, but SMC (DO-214AB) package with 1.5 kW peak power rating | Overqualified for 400 W use cases; introduces unnecessary cost and size unless future-proofing for higher-energy threats | Choose only if system-level surge testing requires >400 W headroom or legacy SMC footprint must be retained |
Compared with SMBJ8.0A and 1.5SMC8.2A, the P4SMA8.2AHM3/H offers optimal balance of AEC-Q101 qualification, halogen-free compliance, compact SMA footprint, and precise 7.02 V standoff - making it ideal for space-constrained automotive and industrial designs where regulatory alignment and manufacturability are critical.
Availability
P4SMA8.2AHM3/H is available at Aetrix Electronics and suitable for automotive control units, industrial sensor nodes, consumer power adapters, and telecom DC feed protection requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P4SMA8.2AHM3/H includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The P4SMA Series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, thermal stability, and repeatable clamping behavior are mandatory.
FAQ
What is the breakdown voltage range of the P4SMA8.2AHM3/H?
The P4SMA8.2AHM3/H has a specified breakdown voltage (VBR) range of 7.79 V to 8.61 V at 10 mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable design margining in 5 V–12 V systems where the P4SMA8.2AHM3/H is commonly deployed.
Is the P4SMA8.2AHM3/H suitable for automotive applications?
Yes, the P4SMA8.2AHM3/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive use. It meets stress tests including temperature cycling, high-temperature reverse bias, and mechanical shock - making the P4SMA8.2AHM3/H appropriate for engine control, body electronics, and ADAS power rail protection.
What does the "HM3" suffix mean in P4SMA8.2AHM3/H?
The "HM3" suffix in P4SMA8.2AHM3/H denotes halogen-free, RoHS-compliant construction with whisker-resistant matte tin plating, meeting JESD 201 Class 2 requirements. It also confirms AEC-Q101 qualification and packaging in 7-inch tape-and-reel (H code), distinguishing it from commercial-grade E3/M3 variants - a key identifier for the P4SMA8.2AHM3/H in automotive BOMs.
How is the P4SMA8.2AHM3/H mounted and what thermal considerations apply?
The P4SMA8.2AHM3/H uses SMA (DO-214AC) package with recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Its RθJA is 120 °C/W; for sustained operation near 3.3 W power dissipation, thermal relief via internal layer copper pours or adjacent ground planes is advised. The P4SMA8.2AHM3/H must be placed outside keep-out zones of heat-generating components.
Does the P4SMA8.2AHM3/H have UL recognition?
Yes, the P4SMA8.2AHM3/H is Underwriters Laboratory recognized under UL 497B (QVGQ2 file E136766) for protector classification, covering both unidirectional and bidirectional variants in the P4SMA family. This UL recognition validates its suitability for safety-critical transient suppression in end-equipment certified to North American safety standards - a verified attribute of the P4SMA8.2AHM3/H.
P4SMA8.2AHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.02V
- Voltage - Breakdown (Min):
- 7.79V
- Voltage - Clamping (Max) @ Ipp:
- 12.1V
- Current - Peak Pulse (10/1000µs):
- 33.1A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA8.2AHM3/H FAQ
1.How can I place an order for P4SMA8.2AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA8.2AHM3/H on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for P4SMA8.2AHM3/H reliable?
The price and inventory of P4SMA8.2AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA8.2AHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA8.2AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA8.2AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA8.2AHM3/H?
P4SMA8.2AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA8.2AHM3/H order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for P4SMA8.2AHM3/H?
For technical support, including P4SMA8.2AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA8.2AHM3/H requirements.
6.How does Aetrix verify that P4SMA8.2AHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA8.2AHM3/H products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that P4SMA8.2AHM3/H meets industry standards.
7.What is the process for return or replacement of P4SMA8.2AHM3/H?
All P4SMA8.2AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA8.2AHM3/H, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The P4SMA8.2AHM3/H part is unused and in its original packaging.
Return procedure for P4SMA8.2AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA8.2AHM3/H Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
